111605161156 has 12 divisors (see below), whose sum is σ = 195311431168. Its totient is φ = 55801895112.

The previous prime is 111605161147. The next prime is 111605161229. The reversal of 111605161156 is 651161506111.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427525 + ... + 637171.

Almost surely, 2^111605161156 is an apocalyptic number.

It is an amenable number.

111605161156 is a deficient number, since it is larger than the sum of its proper divisors (83706270012).

111605161156 is a wasteful number, since it uses less digits than its factorization.

111605161156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342738 (or 342736 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 34.

Adding to 111605161156 its reverse (651161506111), we get a palindrome (762766667267).

The spelling of 111605161156 in words is "one hundred eleven billion, six hundred five million, one hundred sixty-one thousand, one hundred fifty-six".